80 vs large integer

80 and large integer both are nouns.

Word	Noun	Adjective	Verb	Adverb
80	Yes	Yes	No	No
large integer	Yes	No	No	No

As nouns, large integer is a hypernym of 80; that is, large integer is a word with a broader meaning than 80:

80 (noun)	large integer (noun)
the cardinal number that is the product of ten and eight	an integer equal to or greater than ten

80 (adjective)	large integer (adjective)
being ten more than seventy